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Reports boxing of already boxed values.
<p>
  This is a redundant
  operation since any boxed value will first be auto-unboxed before boxing the
  value again. If done inside an inner loop, such code may cause performance
  problems.
</p>
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<p><b>Example:</b></p>
<pre><code>
  Integer value = 1;
  method(Integer.valueOf(value));
</code></pre>
<p>After the quick fix is applied:</p>
<pre><code>
  Integer value = 1;
  method(value);
</code></pre>
<p>
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